Annotation. This article is devoted to the analysis of the need to model a system for assessing the economic efficiency of activities implemented by subjects of public control. In the modern world, the existence and development of individual independent and sovereign states is determined by the level of democracy in the organization and functioning of the apparatus of public power, which in its activities must take into account the interests and needs of the entire population of a particular country, or its overwhelming majority. In this regard, the role and importance of the entire set of civil society institutions in ensuring democratic regimes in individual national states is increasing. In the Russian Federation, the most important institution of civil society at the present stage is the institution of public control. The work substantiates the place and role of this institution of civil society as a legal guarantee of the system of constitutional rights, freedoms and legitimate interests of individuals and legal entities, the rights and legitimate interests of certain categories of legal entities. The authors formalized and analyzed the main factors influencing the effectiveness of the processes of organizing and conducting public control events. The work examines the main problems and prospects for increasing the performance of subjects of public control in the Russian Federation. It is substantiated that one of the main conditions for increasing the effectiveness of the functioning of the institution of public control is the need to assess the effectiveness of the activities of the entire system of subjects of public control in Russia. The work has developed and substantiated the author’s definition of the concepts "effectiveness of activities of subjects of public control", "model for assessing the economic efficiency of activities implemented by subjects of public control". The main features of these concepts, their essence and content are investigated and analyzed. The article formulates and substantiates a model for assessing the economic efficiency of activities implemented by subjects of public control (since it is the most important criterion for assessing the performance of subjects of public control in particular, as well as the institution of public control itself in general), which is a systemic set of quantitative and qualitative criteria.